Tris(4-bromophenyl)aminium Hexachloroantimonate as a “Waste-Utilized”-Type Initiator-Promoted C–H Chlorination via C–H Activation Relay: Synthesis of Chlorinated Pyrroles
作者:Han Ding、Shuwei Zhang、Zheng Sun、Qiyuan Ma、Yuemei Li、Yu Yuan、Xiaodong Jia
DOI:10.1021/acs.joc.2c01641
日期:2022.11.18
Using tris(4-bromophenyl)aminium hexachloroantimonate as a “waste-utilized”-type initiator, the aerobic oxidation of the sp3 C–H bond of proline esters was realized via C–H activation relay, giving a series of halogenated pyrroles in high yields. The mechanistic study revealed that the counterion, SbCl6–, was involved in the radical chlorination process, which provides a new way to understand the role
以三(4-溴苯基)六氯锑酸铵为“废物利用”型引发剂,通过C-H活化接力实现脯氨酸酯sp 3 C-H键的有氧氧化,得到一系列卤代吡咯类化合物高产。机理研究表明,抗衡离子 SbCl 6 -参与了自由基氯化过程,这为理解抗衡离子的作用提供了一种新途径。